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      <a href="/2018/10/07/tanjunxi/tanjunxi1/" title="谭俊熙第一周周报" itemprop="url">谭俊熙第一周周报</a>
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			<ol class="toc"><li class="toc-item toc-level-3"><a class="toc-link" href="#环境搭建"><span class="toc-number">1.</span> <span class="toc-text">环境搭建</span></a><ol class="toc-child"><li class="toc-item toc-level-4"><a class="toc-link" href="#GO"><span class="toc-number">1.1.</span> <span class="toc-text">GO</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#docker，docker-compose"><span class="toc-number">1.2.</span> <span class="toc-text">docker，docker compose</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#docker-images-amp-source-code"><span class="toc-number">1.3.</span> <span class="toc-text">docker images &amp; source code</span></a></li></ol></li><li class="toc-item toc-level-3"><a class="toc-link" href="#测试first-network网络"><span class="toc-number">2.</span> <span class="toc-text">测试first-network网络</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#总结"><span class="toc-number">3.</span> <span class="toc-text">总结</span></a></li></ol>
		
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		<h3 id="环境搭建"><a href="#环境搭建" class="headerlink" title="环境搭建"></a>环境搭建</h3><ul>
<li>系统为ubuntu 16.04<h4 id="GO"><a href="#GO" class="headerlink" title="GO"></a>GO</h4>在 <a href="https://studygolang.com/dl" target="_blank" rel="noopener">GO中文网</a>下载linux的相应安装包<br>解压到 /usr/local 目录，并在 /usr/local/go 中创建Go目录树<br><strong>(注意解压时要去安装包的目录)</strong><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">tar -C /usr/local -xzf go1.11.linux-amd64.tar.gz</span><br></pre></td></tr></table></figure>
</li>
</ul>
<p>添加环境变量<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">vi ~/.bashrc</span><br><span class="line">export GOROOT=/usr/local/go</span><br><span class="line">export GOPATH=$HOME/go</span><br><span class="line">export PATH=$PATH:$GOROOT/bin:$GOPATH/bin</span><br><span class="line">source ~/.bashrc</span><br></pre></td></tr></table></figure></p>
<h4 id="docker，docker-compose"><a href="#docker，docker-compose" class="headerlink" title="docker，docker compose"></a>docker，docker compose</h4><p>升级apt库<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo apt-get update</span><br></pre></td></tr></table></figure></p>
<p>允许https<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">sudo apt-get install \</span><br><span class="line">    apt-transport-https \</span><br><span class="line">    ca-certificates \</span><br><span class="line">    curl \</span><br><span class="line">    software-properties-common</span><br></pre></td></tr></table></figure></p>
<p>添加GPG key<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -</span><br></pre></td></tr></table></figure></p>
<p>指定docker安装稳定版本<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo add-apt-repository \ &quot;deb [arch=amd64] https://download.docker.com/linux/ubuntu \ $(lsb_release -cs) \ stable&quot;</span><br></pre></td></tr></table></figure></p>
<p>安装 DOCKER CE<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">sudo apt-get update</span><br><span class="line">sudo apt-get install docker-ce</span><br></pre></td></tr></table></figure></p>
<p>安装docker-compose<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">curl -L https://github.com/docker/compose/releases/download/1.23.0-rc1/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose</span><br></pre></td></tr></table></figure></p>
<p>设置为可执行并添加到bin路径下<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">chmod +x /usr/local/bin/docker-compose</span><br></pre></td></tr></table></figure></p>
<p><strong>！！！！注意：若为非root用户，可添加docker权限给当前用户，使docker命令免sudo，避免后面运行网络时出现问题</strong></p>
<p>添加docker group：<br><code>sudo groupadd docker</code><br>将当前用户添加到docker组：<br><code>sudo gpasswd -a ${USER} docker</code><br>重启docker服务：<br><code>sudo service docker restart</code></p>
<h4 id="docker-images-amp-source-code"><a href="#docker-images-amp-source-code" class="headerlink" title="docker images &amp; source code"></a>docker images &amp; source code</h4><p>通过此<a href="https://github.com/hyperledger/fabric/blob/master/scripts/bootstrap.sh" target="_blank" rel="noopener">路径</a>下载<strong>bootstrap.sh</strong>脚本<br><strong>(如果不是root用户，请自己将此脚本中的docker命令前加上sudo，否则下载会出错)</strong><br>安装docker加速器（不下的话会很慢）<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://.m.daocloud.io</span><br></pre></td></tr></table></figure></p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">chmod +x bootstrap.sh</span><br></pre></td></tr></table></figure>
<p>运行脚本文件开始下载<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">./bootstrap.sh</span><br></pre></td></tr></table></figure></p>
<p>这个bootstrap脚本所下载的东西<br><strong>1.从github上克隆 hyperledger/fabric-samples并进入该目录，然后检出适当的版本<br>2.在fabric-samples目录下安装特定平台的 Hyperledger Fabric 二进制可执行文件 和配置文件<br>3.下载 指定版本的Hyperledger Fabric 的docker镜像</strong></p>
<h3 id="测试first-network网络"><a href="#测试first-network网络" class="headerlink" title="测试first-network网络"></a>测试first-network网络</h3><p><code>cd fabric-samples/first-network</code><br>执行 ./byfn.sh generate 命令生成相应的文件：<br><code>./byfn.sh generate</code></p>
<p><img src="https://upload-images.jianshu.io/upload_images/14229679-6e4b460c844f0f6c.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240" alt="image.png"></p>
<p><strong>1.byfn.sh为启动这个网络的启动脚本<br>2.启动脚本中除建立一个包含4个节点和1个Order service的网络外，还会启动一个容器用来执行脚本在channel中加入节点，部署和初始化chaincode，以及在部署的chaincode上执行交易<br>3.默认channel名称为mychannel，脚本程序会给网络实例生成数字证书和密钥<br>4.生成genesis block用来启动ordering service</strong></p>
<p>执行 ./byfn.sh up 启动网络<br><code>./byfn.sh up</code></p>
<p><img src="https://upload-images.jianshu.io/upload_images/14229679-7828ed9b26a1d262.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240" alt="image.png"></p>
<p><img src="https://upload-images.jianshu.io/upload_images/14229679-b12be1ddb2ff98ab.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240" alt="image.png"></p>
<p>查看节点启动情况<br><code>docker ps -a</code></p>
<p>执行./byfn.sh down 命令来停止网络<br><code>./byfn.sh down</code></p>
<h3 id="总结"><a href="#总结" class="headerlink" title="总结"></a>总结</h3><p>first-network通过脚本byfn.sh启动fabric，启动脚本后会建立4个节点peer，其中peer可以分为两种<strong>endorsing peer</strong>和<strong>anchor peer</strong>，其中<strong>leader peer</strong>可从orderer获取信息，并且组内广播给其他peer，其他peer可以不直接跟orderer打交道。</p>
<p>在这个网络中，一个endorsing peer和一个anchor peer组成一个org，共两个org组成了channel。每个channel拥有一个账本(存储在Orderer上)，并共享给channel内的所有peer，每个channel中的peer都存储了一份拷贝。</p>
<p>网络运行过程：<br>把节点都加入channel中，org1和org2的anchor peer分别更新信息，两个org的anchor peer都安装链码。<br>实例化org2的链码，询问org1的anchor peer获得认可，向org1的anchor peer提出交易申请，交易成功。<br>把链码安装到org2的另一个peer，询问获得认可，把交易信息同步到节点中。<br>结束！</p>
  
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 <ol class="toc"><li class="toc-item toc-level-3"><a class="toc-link" href="#环境搭建"><span class="toc-number">1.</span> <span class="toc-text">环境搭建</span></a><ol class="toc-child"><li class="toc-item toc-level-4"><a class="toc-link" href="#GO"><span class="toc-number">1.1.</span> <span class="toc-text">GO</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#docker，docker-compose"><span class="toc-number">1.2.</span> <span class="toc-text">docker，docker compose</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#docker-images-amp-source-code"><span class="toc-number">1.3.</span> <span class="toc-text">docker images &amp; source code</span></a></li></ol></li><li class="toc-item toc-level-3"><a class="toc-link" href="#测试first-network网络"><span class="toc-number">2.</span> <span class="toc-text">测试first-network网络</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#总结"><span class="toc-number">3.</span> <span class="toc-text">总结</span></a></li></ol>
 
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  '<a href="http://service.weibo.com/share/share.php?title='+title+'&url='+encodedUrl +'&ralateUid='+ tsina +'&searchPic=true&style=number' +'" class="article-share-weibo" target="_blank" title="微博"></a>',
  '<span title="Share to"></span>'
  ].join('');
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  });
});   
</script>











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